Lead-pencil



M. 0. BORBECK,

LEAD PENCIL. APPLlcArloN FILED JULY 2e, 1919,

Patent@l June 8',v 192:0.

andbearsagainst the end of 1thevlead 17.'

UNITED unirme, non nncx, or sIoUx emr, zown- To all 'whomfz't may come -Be it known that I, MAR'rIN 0j. Bonnncx, la citizen of the United States, and resldmg at iSioux City, WoodburyI county, State of Iowa, have invented certain-new and useful Improvements in Lead-Pencils, 'of.whicl 1 the;

following is a specification. v

The present invention relates to pencils and more articularlyto the type having means for ceding forward the lead.

The principal objects of the invention are to provide an improved pencil of this type having .an-efficient and easily. operated lead feeding device, and further "to, provide a lin connection with the drawings inl which:

- ger.

19 disposed between the tube andthe interior chamber for storing a supply of pencil leads. Other objects and features of novelty will be apparent from the description taken Figure I isa longitudinal sectional elevation through a pencil constructed in accordance with the present invention;

Fig. 2 is a longitudinal sectional elevation of a portion of the p'encil showing the 'feed lever inraised position;` v

Fig.l 3 is a transverse sectional elevation taken substantially on the line'3-3 ofl Fig. 1;

Fig 4 is. a transversepsectional. yelevation substantially on the line 44 lof Fig. 1;

Fig. 5 is a similar sectional view taken substantially on the line 5 5 ofFig. 1; and

' pawl 25 pivoted at-26. The end' of this pawl is 'formed with a hook 28 adapted to Fig. 6 is a partial longitudinal sectional elevation of a modified form of pencil.

Referring to the drawings, the form of pencil illustrated comprises va barrellO including the tip 11 screw threaded inv 'one end and thecap 12 threaded in the. opposite end and closing the barrel. The barrel isprovidedwith a longitudinal passagel for vholding the lead. Asl shownfor this purpose the tip 11 has a tube lf'which projects from .itsv inner end and telescopes in a tube 14 'supported at its opposite end in a recess 15 formed in the cap 12. A plunger'is disposed in the tube14 and consists of a portion 16 which extends into the passage in the tip 11 The plunger16-is also formed with serrations or lteeth 18 for a purpose presently to bel described. In the form shown these serrations or teeth extend around the plunger and their peripheries bear a' ainst the i-nterior of the tube 14 thus guiding the plun.

At its upper end'the tube 14, is supported by the cap 12 and at its other end by a liner to project the lead.

specification of Iettersratent. Patented June '8, 1920. Appumn mea .my 2s, 191s. serial m. 313,651. Y

of thebarrel. s'sh'own in 1 and 4, l

this liner is. cut awa length thereby provi g a chamber 20 for storingv extra pencil leads. 'In fag simil-arY manner, if'desired, the chamber 21 formed between the tube 14 and the upper portion of the barrel may be utilized for storing extra leads. i l

The mechanism' for feeding forward the for a portionof its lead comprises a lever 22- pivoted at 23 preferably on the tube 14. This lever normally fits in an aperture 24 extending through the Wall of the barrel and is adapted' to be-raised to the positionillustrated in Fig.- 2. A awl 25 1s pivoted at 26 to the lever 22 an lthe free end thereof is adapted to extend through an aperture 27 in the tube 14 to engage one of the teeth 18 of the plunger. AThus when the lever 22 is swung down from the position illustrated in Fig..2 to the position illusf trated in Fig. 1 the plunger will be advanced a slight amount and thus push forward the lead 17.

I In the form just described the pencil lead the upward movement of the lever; Inv this form 'of the invention the lever 22' is pivoted as at 23 to the tube 14 and carries a engage one of the Iteeth of the plunger, lthis hooked end extending through the aperture lever 22- is raised the plunger will be advanced towardthe right as viewed in- Fig. 6

thus feeding'forward the lead.

The normal positions of the parts are illustrated in F1gs.'1 and 6.. When itis desired touse the pencil the operating lever '22 or 22 is raised. Y In the form shown in Fig. 6' this raising -movement through -the pawl 25 will project the lead 17 a slightamount.

from the end ofthe tip 11. The .lever 22' is then lreturned to its nested position. In

" the form'shown .in Fig'. 1 the raisin move'- ment does. notin any way projectt e lead,

v but whenthelever is swung f romthe'pos1 tion showninFig. 2 tothat shown 'in-Flgf,

'27 ijn the tube 14. l It will be seen when the the plunger will'be advanced in the v direction v longitudinal aXis through about 180' so that thel lever ison the underside of the pencil. Then the paw] will fall by gravity against the lever whereupon the lead 17 may 'be pressed back into its passage and thereafter the lever and pawl move to their nested p0- sitions as shown in Figs. 1 and 6. As pre-V viously stated the chambers 20 and 2l may be usedfor storing extra leads, access to the chamber 20 being had by removing the "tip 1l and to the chamber 2l by removing the cap 12.

Although two specific forms of the iuvention have been described in detail, it is to be understood that the invention is not Athus limited but includes modifications and changes which come within the scope of the ap ended claims.

laving thu's described the invention what is claimed as new and desired to be secured by Letters Patent is:

1. A device of the character described including in combination, a barrel having a longitudinally extending passage open at one end of the barrel adapted to hold a pencil lea'd, a plunger having a portion fitting said passage adapted to bear at one end against said lead, said plunger having annular ratchet teeth, an operating member, and a pawl .carried by said member operative on said teeth whereby the plunger and lead are advanced a stepby each actuation of said member.

2. A pencil of the character described including in combination, a barrel having a longitudinal passage open at one end adapted to`- hold a pencil lead, a plunger in said passage adapted to bear at one end against the lead, a lever carried by the pencil, and a pawl pivoted on the lever, said plunger having `teeth adapted to be engaged by the pawl to advance the plunger when the lever is moved in one direction.

3. A pencil of the character described including in combination, a barrel having a longitudinally disposed tube open at one end of the barrel adapted to hold a pencil lead, said barrel having an aperture through its wall, a lever pivoted to the pencil and normally disposed to close said aperture with its outer surface flush with the outer surface of the barrel, a pawl `pivoted on the lever and operable through an aperture in said tube to advance the lead when the lever is swung in one direction. e l

4. A pencil of thecharacter described in cluding in combination, a. barrel 'having a longitudinally disposed tube open at one end of the barrel Iadapted to hold a pencil lead, said barrel having an aperture through its Wall, a lever pivoted to the pencil and normally disposed to close said aperture, a pawl pivoted on the lever and' operable through an aperture in said tube, and a plunger fitted in said tube engaged by said pawl to advance the same when the lever isA swun in one direction.

5. pencil of the character described in# cluding in combination, av barrel having a longitudinally disposed tube open at one end of the barrel adapted to hold apencil lead, said barrel having an aperture through its wall, a lever pivoted to the pencil and normally disposed to close said aperture, a pawl pivoted on the lever and operable through an aperturein said tube, a plunger Fitted in said tube having annular teeth engaged by said pawl when the lever is swung in one direction, thereby advancing the plunger in the tube.

6. A pencil of the character described including in combination, a barrel having a longitudinal passage open 'at one end adapt` ed to hold a pencil lead, a plunger in said passage adapted at one end to bear against the lead, said plunge-r formed with serrations, an aperture through the wall of said barrel, a lever pivoted at one end of saidv aperture and normally closing said vaperture, a pawl pivoted on said lever adapted to engage said serrations and advance the plunger 'when the lever is moved in one direction and to hold the plunger and lead against inward movement when the lever closessaid aperture.

In testimony whereof I aix my signature. i.

MARTIN o. BoRBEcK. 

